Two men undertake to drive a distance of 54 km. The first performs the journey at 8 km/hr. The second, starting half an hour later, arrives 15 minutes sooner. Find the approximate ratio of the speeds of the first to the second person.
Two men undertake to drive a distance of 54 km. The first performs the journey at 8 km/hr. The second, starting half an hour later, arrives 15 minutes sooner. Find the approximate ratio of the speeds of the first to the second person.
2 kids, John and Jim, are running on an escalator (a moving stairway). John is running three times as fast as Jim, and by the time they are off the escalator, John has stepped on 75 stairs while Jim has stepped on 50 stairs. What is the ratio of the elevator’s speed to Jim’s speed?
2 kids, John and Jim, are running on an escalator (a moving stairway). John is running three times as fast as Jim, and by the time they are off the escalator, John has stepped on 75 stairs while Jim has stepped on 50 stairs. What is the ratio of the elevator’s speed to Jim’s speed?
A train running at 36 km/hr takes 12 seconds to pass a platform. Next it takes 6 seconds to pass a man running at the rate of 9 km/hr in the opposite direction. Find the length of the train and the length of the platform.
A train running at 36 km/hr takes 12 seconds to pass a platform. Next it takes 6 seconds to pass a man running at the rate of 9 km/hr in the opposite direction. Find the length of the train and the length of the platform.
A and B ran a km race and A wins by 60 seconds. A and C run a km and A wins by 375 metre, B and C run a km and B wins by 30 seconds. Find the time that C takes to run a km.
A and B ran a km race and A wins by 60 seconds. A and C run a km and A wins by 375 metre, B and C run a km and B wins by 30 seconds. Find the time that C takes to run a km.
A jet is flying 2400 miles from Hawaii to San Francisco. In still air, it flies at 600 mph. There is a 40 mph tailwind in the same direction. Exactly how many hours after takeoff would it becomes neutral for the plane to either go to San Francisco or to return to Hawaii in the case of an emergency?
A jet is flying 2400 miles from Hawaii to San Francisco. In still air, it flies at 600 mph. There is a 40 mph tailwind in the same direction. Exactly how many hours after takeoff would it becomes neutral for the plane to either go to San Francisco or to return to Hawaii in the case of an emergency?
A train traveling at 90 km/hr crosses a bridge in 36 seconds. Another train 100 metre shorter crosses the same bridge at 45 km/hr. Find the time taken by the second train to cross the bridge.
A train traveling at 90 km/hr crosses a bridge in 36 seconds. Another train 100 metre shorter crosses the same bridge at 45 km/hr. Find the time taken by the second train to cross the bridge.
A thief goes away with a Maruti car at a speed of 40 km/hr. The thief has been discovered after half an hour and the owner sets off in another car at 50 km/hr. When will the owner overtake the thief, from the time the thief made his start?
A thief goes away with a Maruti car at a speed of 40 km/hr. The thief has been discovered after half an hour and the owner sets off in another car at 50 km/hr. When will the owner overtake the thief, from the time the thief made his start?
A takes 4 minutes 50 seconds, while B takes 5 minutes to complete a race. A beats B by 33 1 /3 metre. Find the length of the course.
A takes 4 minutes 50 seconds, while B takes 5 minutes to complete a race. A beats B by 33 1 /3 metre. Find the length of the course.
A 150 metre long train crosses a bridge of length 250 metre in 30 seconds. Find the time the train takes to cross a platform 130 metre long.
A 150 metre long train crosses a bridge of length 250 metre in 30 seconds. Find the time the train takes to cross a platform 130 metre long.
Local trains leave from a station at intervals of 14 minutes at 36 km/hr. A man moving in the same direction along the road meets the trains at intervals of 18 minutes. Find the speed of the man.
Local trains leave from a station at intervals of 14 minutes at 36 km/hr. A man moving in the same direction along the road meets the trains at intervals of 18 minutes. Find the speed of the man.
A long distance runner runs 9 laps of a 400 metre track every day. His timings (in minutes) for four consecutive days are 88, 96, 89 and 87 respectively. On an average, how many metre/minute does the runner cover?
A long distance runner runs 9 laps of a 400 metre track every day. His timings (in minutes) for four consecutive days are 88, 96, 89 and 87 respectively. On an average, how many metre/minute does the runner cover?
Two trains, 130 and 110 metre long, are going in the same direction. The faster train takes one minute to pass the other completely. If they are moving in opposite directions, they pass each other completely in 3 seconds. Find the speed of the trains respectively (in m/sec).
Two trains, 130 and 110 metre long, are going in the same direction. The faster train takes one minute to pass the other completely. If they are moving in opposite directions, they pass each other completely in 3 seconds. Find the speed of the trains respectively (in m/sec).
A boatman can row 1 ½ km against the stream in 22 ½ minutes and return in 15 minutes. Find the rate of flow of the current.
A boatman can row 1 ½ km against the stream in 22 ½ minutes and return in 15 minutes. Find the rate of flow of the current.
Find the length of a bridge, which a train 130 m long, travelling at 45 km an hour, can cross in 30 seconds.
Find the length of a bridge, which a train 130 m long, travelling at 45 km an hour, can cross in 30 seconds.
The ratio between the speeds of A and B is 4 : 5. If A takes 20 minutes more than B to cover a distance, find the actual time taken by A.
The ratio between the speeds of A and B is 4 : 5. If A takes 20 minutes more than B to cover a distance, find the actual time taken by A.
A man rows to a place 48 km distant and back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. Find the rate of flow of the stream.
A man rows to a place 48 km distant and back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. Find the rate of flow of the stream.
In a game of billiards, A can give B 12 points in 60 and A can give C 10 in 90. How many can C give B in a game of 70?
In a game of billiards, A can give B 12 points in 60 and A can give C 10 in 90. How many can C give B in a game of 70?
A train running at 25 km/hr takes 18 seconds to pass a platform. Next it takes 10 seconds to pass a man walking at the rate of 7 km/hr in the same direction. Find the length of the platform and the length of the train.
A train running at 25 km/hr takes 18 seconds to pass a platform. Next it takes 10 seconds to pass a man walking at the rate of 7 km/hr in the same direction. Find the length of the platform and the length of the train.
Joe was driving on the highway. A car ahead of him was driving far below the speed limit so he decided to pass. In the first second he gained 5 m on the car and as he accelerated he gained 1.5 times as much distance in each second, as he had the second before. If there was 30 m between Joe and the car he was passing, then approximately how long did it take him to pass?
Joe was driving on the highway. A car ahead of him was driving far below the speed limit so he decided to pass. In the first second he gained 5 m on the car and as he accelerated he gained 1.5 times as much distance in each second, as he had the second before. If there was 30 m between Joe and the car he was passing, then approximately how long did it take him to pass?
X, Y, and Z are the three contestants in a kilometre race. If X can give Y a start of 50 metre and X can also give Z a start of 69 metre, how many metre start can Y give Z?
X, Y, and Z are the three contestants in a kilometre race. If X can give Y a start of 50 metre and X can also give Z a start of 69 metre, how many metre start can Y give Z?